CN106763415A - Hydro-pneumatic spring floating piston - Google Patents
Hydro-pneumatic spring floating piston Download PDFInfo
- Publication number
- CN106763415A CN106763415A CN201710181282.3A CN201710181282A CN106763415A CN 106763415 A CN106763415 A CN 106763415A CN 201710181282 A CN201710181282 A CN 201710181282A CN 106763415 A CN106763415 A CN 106763415A
- Authority
- CN
- China
- Prior art keywords
- sealing
- floating piston
- oil
- high pressure
- pressure nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/061—Mono-tubular units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/341—Special valve constructions; Shape or construction of throttling passages comprising noise-reducing or like features, e.g. screens
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/368—Sealings in pistons
Abstract
It is an object of the invention to provide a kind of hydro-pneumatic spring floating piston, install in the cylinder, for isolating hydraulic oil and high pressure nitrogen, two seals are disposed with floating piston, wherein oil sealing is near hydraulic oil side, sealing gland is near high pressure nitrogen side, also three seal structures can be used, wherein near hydraulic oil side, using Glais ring, main sealing gland is arranged in the centre position of three seals to oil sealing, the pneumostop pattern sealed using AQ, secondary sealing gland is arranged in high pressure nitrogen side, using this spy's envelope with one-way sealing ability, seals direction towards high pressure nitrogen.
Description
Technical field
The present invention relates to be used for hydro-pneumatic spring floating piston, belong to hydraulic machinery and vehicular field.
Background technology
Hydro-pneumatic spring be using inert gas (nitrogen) as elastic fluid, using fluid as power transmission medium, collection flexible member and
Damping element is in the vibration absorber of one.It appear that nonlinear characteristic well, installing additional can also be real after hydraulic electric control system
The functions such as the regulation of existing car appearance, suspension stiffness locking.Oleo-pneumatic suspension can fully improve the machine of vehicle compared with other suspension
Dynamic property, comfortableness and control stability, can especially meet the index request of special vehicle, engineering truck and military vehicle, have
There is good development prospect.
High pressure combination sealing is the important component of hydro-pneumatic spring, and Main Function is to separate hydraulic oil and gas, is prevented
Only air-fuel mixture.Because operating pressure is higher, gas and fluid molecular volume difference are larger, it is often necessary to using multiple-sealed
Circle, although so improve sealing effectiveness, causes middle sealing ring and poor by the lubricant environment of the sealing ring of gas side,
Easily cause the premature wear of sealing ring, substantially reduce service life, reduce the reliability of hydro-pneumatic spring.
The content of the invention
The present invention provides a kind of hydro-pneumatic spring floating piston, installs in the cylinder, for isolating hydraulic oil and high pressure nitrogen,
Two seals are disposed with floating piston, near hydraulic oil side, sealing gland is used wherein oil sealing near high pressure nitrogen side, oil sealing
Glais ring, the sealing structure with bi-directional sealing capabilities, to improve the job stability of floating piston, increasing guidance tape is used to float
Support and guiding in piston motion process.
Secondly, floating piston uses three seal structures, wherein oil sealing to be close to hydraulic oil side, using Glais ring, have
The sealing structure of bi-directional sealing capabilities, main sealing gland is arranged in the centre position of three seals, the pneumostop pattern sealed using AQ,
Secondary sealing gland is arranged in high pressure nitrogen side, using this spy's envelope with one-way sealing ability, seals direction towards high pressure nitrogen.
Brief description of the drawings
Fig. 1 is hydro-pneumatic spring fundamental diagram
Fig. 2 is fitting arrangement of the floating piston with lubricating oil automatically supplying apparatus in cylinder barrel
Fig. 3 is the floating piston installation diagram with lubricating oil automatically supplying apparatus
Fig. 4 is sectional view of the floating piston with lubricating oil automatically supplying apparatus along Section A-A
In figure, 1- main piston 2- oil cylinder 3- hydraulic oil 4- damper valve 5- normal opens hole 6- floating piston 7- cylinders 8-
High pressure nitrogen 9- valve pistons 10- oil side seal circle 11- shoe cream room 12- oil leab 13- self-lubricate floating pistons 14-
Cylinder barrel 15- plenum chamber 16- gas side seal circle 17- valve piston sealing ring 18- jump ring 19- hydraulic oil 20- oil-ways
First oil sealing 26- second oil sealing of 21- oil sealing 22- sealing glands 25-
Specific embodiment
The present invention is further illustrated with example below in conjunction with the accompanying drawings.
Fig. 1 is hydro-pneumatic spring fundamental diagram, and oil cylinder 2 and the inner chamber of cylinder 7 pass through together with oil channel connection, oil cylinder
Damper valve 4, and main piston 1 are installed in 2, high pressure combination oil seal is disposed with main piston 1, the hydraulic oil for sealing inner chamber
3, concrete scheme one：Combination with two seals, wherein being disposed adjacent to as first oil sealing 25 using this spy's envelope
Hydraulic oil side, with one-way sealing ability, and sealing direction is towards oily side, near the second oil of hydro-pneumatic spring annular chamber side
Envelope 26 can use Glais ring, with bi-directional sealing capabilities, also can seal direction court using this spy's envelope with one-way sealing ability
Oily side, it is necessary to explanation is that the compression ratio of second oil sealing 26 should be greater than first oil sealing 25, to have more preferable frizing energy
Power；Concrete scheme two：Combination with three seals, wherein being disposed adjacent to as first oil sealing 25 using this spy's envelope
Hydraulic oil side, with one-way sealing ability, towards oily side, the 3rd road oil sealing is arranged in three seals centre position in sealing direction,
This spy's envelope of one-way sealing structure is also adopted by, sealing direction forms tandem seal and combine, has towards oily side, with first sealing 25
There is better seal ability, second seals 26 then near hydro-pneumatic spring annular chamber, equally using this spy's envelope, seals direction towards ring
Shape chamber side, plays reverse sealing function, it is necessary to explanation is that the compression ratio of the 3rd road oil sealing should be greater than first oil sealing 25, so as to
With more preferable frizing ability.
Floating piston 6 is installed in cylinder 7, for isolating hydraulic oil 3 and high pressure nitrogen 8, is generally arranged on floating piston
There are two seals, near hydraulic oil side, sealing gland 22 uses Glais ring to wherein oil sealing 21 near the side of high pressure nitrogen 8, oil sealing 21,
Sealing structure with bi-directional sealing capabilities, to improve the job stability of floating piston 6, can typically increase guidance tape for floating
Support and guiding in the motion process of piston 6.
Floating piston 6 can also use three seal structures, and wherein oil sealing 21 is still close to hydraulic oil side, using lattice Lay
Circle, the sealing structure with bi-directional sealing capabilities, main sealing gland is arranged in the centre position of three seals, using the typical gas such as AQ envelopes
Dynamic sealing pattern, secondary sealing gland is then arranged in the side of high pressure nitrogen 8, using this spy's envelope with one-way sealing ability, seals direction
Towards high pressure nitrogen 8, main purpose is to reduce compressing and damage of the gases at high pressure to main sealing gland during piston movement, is extended airtight
The property time.
As shown in Fig. 2 self-lubricate floating piston 13 is sleeved in cylinder barrel 14, its effect is by the He of hydraulic oil 19 of top
The plenum chamber 15 of lower section is separated, and prevents air-fuel mixture.Two are employed between self-lubricate floating piston 13 and cylinder barrel 14
Road radial direction seal ring, is respectively the gentle side seal circle 16 of oily side seal circle 10.In traditional floating piston, only few liquid
Force feed 19 can pass through sealing ring 10, it is difficult to the inwall in the cylinder barrel 14 near gas side produces good lubricating oil film, therefore, gas side
The lubricant environment of sealing ring 16 is poor, easily weares and teares.
For such case, as shown in Figure 2, Figure 4 shows, design valve piston 9 is sleeved on the center of self-lubricate floating piston 13
In lightening recesses, the shoe cream room 11 surrounded by valve piston 9 and self-lubricate floating piston 13 is filled with lubricating oil, small
The radial arrangement of piston 9 has sealing ring 17, and radial seal is cooperatively formed with lightening hole inwall, prevents hydraulic oil 19 and shoe cream room 11
In lubricating oil mixing.The upper end of lightening hole is equipped with jump ring 18, the axial direction fortune for limiting the Relative Floating piston 13 of valve piston 9
It is dynamic, prevent the valve piston 9 in high-speed motion from being come off from self-lubricate floating piston 13.
As shown in Figure 3, Figure 4, there is the profit of oil leab 12 and circumference radially the side of self-lubricate floating piston 13
Oil groove 20, oil leab 12 is used to for the lubricating oil in shoe cream room 11 to be directed to oil-way 20 and self-lubricate floating piston
13 and cylinder barrel 14 radial gap in, oil-way 20 can not only store parts of lubricating oil, can also make lubricating oil along float live
The circumferential flow of plug 6, to form uniform lubricating oil film in cylinder barrel inner surface.When self-lubricate floating piston 13 bears to come from
During the pressure of hydraulic oil 19 and plenum chamber 15, valve piston 9 is moved downward relative to floating piston 13, and the volume of shoe cream room 11 becomes
It is small, lubricating oil or lubricating grease order is flowed to self-lubricate floating piston 13 and cylinder barrel 14 through oil leab 12, oil-way 20
Between radial gap in, cylinder barrel 14 inwall produce stabilization lubricating oil film, significantly improve gas side seal circle 16
Lubricant environment.
Only with two seals circle 10 and 16, but this area skill on the self-lubricate floating piston 13 shown in accompanying drawing
Art personnel are it can be readily appreciated that the automatically supplying apparatus with lubricating oil involved in the present invention equally can be installed as described above
On the floating piston of other multiple-sealed circles, and oil leab and lubrication can be increased in the weak spot of any sealing lubrication
Oil groove, lubricating oil is led the way to the position for needing.
What is be full of in the shoe cream room 11 shown in accompanying drawing is lubricating oil, but those skilled in the art can be easily geographical
Solution, can also be full of lubricating grease in the floating piston shoe cream room 11 with lubricating oil automatically supplying apparatus involved in the present invention.
The lightening hole of the self-lubricate floating piston 13 shown in accompanying drawing is towards hydraulic oil 19, but those skilled in the art
It can be readily appreciated that the lightening hole of the floating piston with lubricating oil automatically supplying apparatus involved in the present invention can also direction
High pressure nitrogen.
It should be noted that skilled person can easily appreciate that, the present invention can be not being departed from by appended power
In the case that profit requires the spirit and scope for limiting, the change and change of various multi-forms are carried out.
Claims (2)
1. a kind of hydro-pneumatic spring floating piston, installs in the cylinder, for isolating hydraulic oil and high pressure nitrogen, cloth on floating piston
Two seals are equipped with, near hydraulic oil side, sealing gland uses Glais ring, have wherein oil sealing near high pressure nitrogen side, oil sealing
The sealing structure of bi-directional sealing capabilities, to improve the job stability of floating piston, increases guidance tape and is moved for floating piston
During support be oriented to.
2. hydro-pneumatic spring floating piston according to claim 1, it is characterised in that：Floating piston uses three seals knot
, near hydraulic oil side, using Glais ring, the sealing structure with bi-directional sealing capabilities, main sealing gland is arranged in for structure, wherein oil sealing
The centre position of three seals, the pneumostop pattern sealed using AQ, secondary sealing gland is arranged in high pressure nitrogen side, using with list
To this spy's envelope of sealability, direction towards high pressure nitrogen is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710181282.3A CN106763415A (en) | 2017-03-24 | 2017-03-24 | Hydro-pneumatic spring floating piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710181282.3A CN106763415A (en) | 2017-03-24 | 2017-03-24 | Hydro-pneumatic spring floating piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763415A true CN106763415A (en) | 2017-05-31 |
Family
ID=58967308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710181282.3A Pending CN106763415A (en) | 2017-03-24 | 2017-03-24 | Hydro-pneumatic spring floating piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106763415A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869607A (en) * | 2018-08-17 | 2018-11-23 | 中国北方车辆研究所 | Hydro-pneumatic spring device, damping means, suspension frame structure and vehicle |
| CN112172632A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Variable-pressure active liquid vibration isolation seat system |
| CN113565915A (en) * | 2021-08-09 | 2021-10-29 | 烟台星辉航空液压有限公司 | Four-cavity oil gas buffering structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015037326A1 (en) * | 2013-09-13 | 2015-03-19 | カヤバ工業株式会社 | Single-cylinder shock absorber |
| CN105172919A (en) * | 2015-08-31 | 2015-12-23 | 中国兵器工业集团第二O二研究所 | Front part buffer device for semi-trailer transport vehicle |
| CN105556162A (en) * | 2013-09-20 | 2016-05-04 | Ｋｙｂ株式会社 | Damping device |
| CN105556161A (en) * | 2013-09-19 | 2016-05-04 | Ｋｙｂ株式会社 | Damping device |
-
2017
- 2017-03-24 CN CN201710181282.3A patent/CN106763415A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015037326A1 (en) * | 2013-09-13 | 2015-03-19 | カヤバ工業株式会社 | Single-cylinder shock absorber |
| CN105556161A (en) * | 2013-09-19 | 2016-05-04 | Ｋｙｂ株式会社 | Damping device |
| CN105556162A (en) * | 2013-09-20 | 2016-05-04 | Ｋｙｂ株式会社 | Damping device |
| CN105172919A (en) * | 2015-08-31 | 2015-12-23 | 中国兵器工业集团第二O二研究所 | Front part buffer device for semi-trailer transport vehicle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869607A (en) * | 2018-08-17 | 2018-11-23 | 中国北方车辆研究所 | Hydro-pneumatic spring device, damping means, suspension frame structure and vehicle |
| CN112172632A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Variable-pressure active liquid vibration isolation seat system |
| CN113565915A (en) * | 2021-08-09 | 2021-10-29 | 烟台星辉航空液压有限公司 | Four-cavity oil gas buffering structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
|
| RJ01 | Rejection of invention patent application after publication |